Seismic vibrator controlled by directly detecting base plate motion
US8061471B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 30, 2010 |
| Grant date | Nov 22, 2011 |
| Priority date | — |
| Expiry date | Apr 30, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V1/047
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A seismic vibrator has a base plate with at least four isolators isolating a frame from the base plate. Each of these isolators is offset from the plate's footprint on shelves to free up area on the plate's top surface. An accelerometer disposed directly on the base plate detects the acceleration imparted to the plate. To reduce flexing and bending, the plate has an increased stiffness and approximately the same mass of a plate for a comparably rated vibrator. The accelerometer disposes at a particular location of the plate that experiences transition between longitudinal flexing along the plate's length. This transition location better represents the actual acceleration of the plate during vibration and avoids overly increased and decreased acceleration readings that would be obtained from other locations on the plate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.